<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.currentCity}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div
              class="button-wrapper"
              v-for="item in hot"
              :key="item.id"
              @click="handleCityClick(item.name)">
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
        <div
          class="area"
          v-for="(item,key) in cities"
          :key="key"
          :ref="key"
        >
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list">
            <div class="item border-bottom"
                 v-for="innerItem in item"
                 :key="innerItem.id"
                 @click="handleCityClick(innerItem.name)"
            >
              {{innerItem.name}}
            </div>

          </div>
        </div>
      </div>
    </div>
</template>

<script>
  import {mapState,mapMutations} from 'vuex'
  import Bscroll from 'better-scroll'
    export default {
        name:'CityList',
        props:{
          hot:Array,
          cities:Object,
          letter:String
        },
        computed:{
          ...mapState({
            currentCity: 'city'
          })
        },
        data(){
            return {}
        },
        mounted(){
          this.scroll = new Bscroll(this.$refs.wrapper)
        },
        watch:{
          letter(){
            if(this.letter){
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
          }
        },
        methods: {
          handleCityClick(city){
//            this.$store.commit('changeCity',city)
            this.changeCity(city)
            this.$router.push('/')
          },
          ...mapMutations(['changeCity'])
        }
    }
</script>

<style scoped lang="stylus">
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top:1.58rem
    left:0
    right:0
    bottom:0
    .title
      line-height .54rem
      background: #eeeeee
      padding-left: .2rem
      color: #666
      font-size:.26rem
    .button-list
      overflow: hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        float: left
        width:33.33%
        .button
          text-align: center
          margin: .1rem
          padding:.1rem 0
          border:.02rem solid #ccc
          border-radius:.1rem
    .item-list
      .item
        line-height: .76rem
        padding-left: .2rem



</style>
